The Chronicle of Higher Ed reports today that a new study shows female professors at the University of Texas-Austin earn about $9,000 less on average per year than their male colleagues.
The study also found that women were leaving the university more often then men before reaching tenure. Unfortunately, none of this is particularly revelatory. Men have consistently outearned men for years at the university level (and in other sectors as well) and have a much harder time reaching tenure (it's something I've written about more in detail here).
The information about how much men and women are making becomes much easier to determine, monitor, and combat when pay information is public. This makes a lot of people squeamish, but most public universities already have pay information public. It's just stuck in the basement of the university's library somewhere. Public information usually prevents discrimination.